Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2006-06-20
2006-06-20
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
Reexamination Certificate
active
07064888
ABSTRACT:
There is suppressed deterioration of transmission quality resulting from FWM light generated in the optical fiber of an optical transmission apparatus that performs wavelength division multiplex transmission. To suppress deterioration of the transmission quality due to the FWM light, the sender apparatus adjusts the intensity of wavelength-division-multiplexed light output to the optical fiber, according to a level of FWM crosstalk observed by receiver apparatus.
REFERENCES:
patent: 5559910 (1996-09-01), Taga et al.
patent: 5818629 (1998-10-01), Kinoshita
patent: 5995275 (1999-11-01), Sugaya
patent: 6128111 (2000-10-01), Roberts
patent: 6154273 (2000-11-01), Suzuki
patent: 6323993 (2001-11-01), Hansen et al.
patent: 6411429 (2002-06-01), Tomofuji et al.
patent: 6611370 (2003-08-01), Namiki et al.
patent: 6657779 (2003-12-01), Cavaliere et al.
patent: 6697558 (2004-02-01), Hansen et al.
patent: 6819479 (2004-11-01), Islam et al.
patent: 6819828 (2004-11-01), Takahashi et al.
patent: 2001/0036347 (2001-11-01), Hansen et al.
patent: 2002/0181045 (2002-12-01), Uda et al.
patent: 07-074699 (1995-03-01), None
patent: 08-097771 (1996-04-01), None
patent: 2001-217781 (2001-08-01), None
patent: 2002-368692 (2002-12-01), None
Fabrizio Forghieri et al., “Reduction of Four-Wave Mixing Crosstalk In WDM Systems Using Unequally Spaced Channels”, IEEE Photonics Technology Letters, vol. 6, No. 6, Jun. 1994, pp. 754-756.
Noboru Takachio et al., “32 X 10 Gb/s distributed Raman amplification transmission with 50-GHz channel spacing in the zero-dispersion region over 640 km of 1.55-um dispersion-shifted fiber”, 1999 Optical Fiber International Conference, Postdeadline Paper 9, pp. PD9-1-PD9-3.
J. Kani et al., “Interwavelength-Band Nonlinear Interactions and Their Suppression In Multiwavelength-Band WDM Transmission Systems”, Journal of Lightwave Technology, vol. 17, No. 11, Nov. 1999, pp. 2249-2260.
Kusano Yoshimasa
Miyake Ryoichi
Nakada Takeshi
Takizawa Elichirou
Uda Tetsuya
Bolda Eric
Hitachi , Ltd.
Keith Jack
McDermott Will & Emery LLP
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